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Last name オラフ (Olaf , Olah , オラフ ) , globally, is a common cognomen. The family name オラフ is characteristic of Eastern Europe, particularly Hungary, where it is a common surname, Slovakia, where it is quite a common surname, and Romania. Not in comparison with a country's population, it is the most numerous in Hungary, Romania, and the United States. More frequently, オラフ is the forename as well as the last name.